212402643 has 8 divisors (see below), whose sum is σ = 283566528. Its totient is φ = 141420264.

The previous prime is 212402627. The next prime is 212402647. The reversal of 212402643 is 346204212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212402643 - 2⁴ = 212402627 is a prime.

It is a super-2 number, since 2×212402643² = 90229765506770898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212402647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42621 + ... + 47342.

It is an arithmetic number, because the mean of its divisors is an integer number (35445816).

Almost surely, 2^212402643 is an apocalyptic number.

212402643 is a deficient number, since it is larger than the sum of its proper divisors (71163885).

212402643 is an equidigital number, since it uses as much as digits as its factorization.

212402643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90753.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 212402643 is about 14574.0400369973. The cubic root of 212402643 is about 596.6504495382.

Adding to 212402643 its reverse (346204212), we get a palindrome (558606855).

The spelling of 212402643 in words is "two hundred twelve million, four hundred two thousand, six hundred forty-three".